﻿function testForObject(Id, Tag) // tests if a div exists
{
    var o = document.getElementById(Id);
    if (o) {
        if (Tag) {
            if (o.tagName.toLowerCase() == Tag.toLowerCase()) {
                return o;
            }
        }
        else {
            return o;
        }
    }
    return null;
}

function enableLinks() {
    var linksDiv = $get("linksDiv");
    var lovingInDetails = testForObject("lovingInDetails");
    linksDiv.style.color = "Black";
    linksDiv.style.display = "block";
    if (lovingInDetails) {
        lovingInDetails.style.display = "block";
        opacity("lovingInDetails", 0, 100, 1000);
    }
    opacity("linksDiv", 0, 100, 1000);

    return false;
}

function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if (opacStart > opacEnd) {
        for (i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')", (timer * speed));
            timer++;
        }
    } else if (opacStart < opacEnd) {
        for (i = opacStart; i <= opacEnd; i++) {
            setTimeout("changeOpac(" + i + ",'" + id + "')", (timer * speed));
            timer++;
        }
    }
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
} 